Carbureter.



S. W. "WEAVER.

CARBURETEH.

APPLICATION FILED NOV :2, 194% Patented Oct. 15, 1918.

WITNESSES:

SAMUEL WILSON WEAVER, OF HUBBARD, OREGON.

. obtain.

, E cylinder-g, and rapid insure rapidudoinb'ustion the go To all whom it may concern;

Be it known that I; SAMUEL WILSON Wmvnn, a' citizen oithe United States, and a resident of Hubbard, county .of Marion State of Oregon, have invented a' newan useful Improvement in Carbureters of which the ollowinfg is; a specification.

Thisinvention re tes to an improved type ofca burter. adapted for use' in connection with internal combustionoeng ines, particula'rlyi ento nobile enfines As wellknown, the". ower pbta-ine from algae en" ine ded; upon the combustion or too 1 ine t-he combustion is-necessery in ordertoiprod celiighn QiQIJQX-v T eons vapors un'd""a1r"must'-ibe mixed in properreportime. For a constant-speed-engine t is proportion is easily obtained by initial achustm ms, hit" in "an engine in which the speed isbei'ng constantly varied, the proper proportiongi hisvarying speed of the engine is controlle by regulating the Suppl to the c linders. and' in order to eep the mixture ofthe -desired ropo'rtions, it is nee essary suppl'yeir in efinite proportion to [the volatile vapors evaporating from the hydrwcarbbn li uidh I attain my 0 jectv'by making the valve crmtrollingthe air-inlet of the carburetor in theform of a. sliding c linder given a. weight proportional to t e resistance the v valve shull oil'ersto the suction-of the engine. 35

I do not useu spring at allbut depend solely on the weight, tor the reason that I believe a spring is undesirable because it has no unifornr resistance; to the contrary it varies its resistance as the spring is compressed, and

the iii-pose of my invention is to provide a uni orm resistance. I further restrain the valve agninstmovement by the more violent vibration ofthe vehicle, by coupling the vulve'stem a dash-pot, I further support the nee 10 valve, controlling-the inflow of ffu'el from the air va1ve,'- so that the moveme g of both 'oil and air valves will be synchronous, when properly adjusted to each other. this-we an eflectiveintermixture will be automation ly sustained. 'QThe details of mylcinvention are herein- "itfter-described. i Inthe aiccompenyi g' -dmwing: The figure'is a. vertical longitudinal section' of 'a carburetor constructed according to the principles of my invention.

of the mixture is more difiicult to tending entire].

' in of the member! ,so

the mixing chamber,

Specification airmen remit. Patented Oct. 15,1918. Application filed November 12, 1915. Serial No. 61,187, i

a represents the bowl of the carburetor, the-usuuldrain cock being omitted. A cork flout b, pivoted at c, has fixed on its upper portion a needle valve 11, adapted to sea-tin a valve opening e, which with a gasolene feed conduit f. It is evi- .dentthnttthe automatic action of the. float valve-will" maintain a constant level of gasolene in-tlre bowl. ,A conduit I connects the bowl, a, with a connects directly 5 cond uit-h'whic extends vol tically through an adjustable member 1:, and

the upper end of the conduit in isformed with a valve opening adapted to. be con trolled-by the spray nozzle/needle k." The member is locked in adjusted position b a lock-nut l; The upper 'endof thewmem is i112cvides .v w th a coni a head axial. withthe valve opening j. The member i i'projects upward through an air inlet chainber -n, the latter being provided with tan orifice ,0, ccnnerlmg directly witht-he atmose p phere, and said chamber isfurther provided cone m, and. of larger diameter than the with a circular orifice p, concentric with tthe maximum diameter of theletten' This 'construction provides-an annular opemn g ex-fl cylindrical mix ng chamberrectly above the spraq; nozz" e valve, and; is coaxial therewith. 1

diameter of the orifice-p; The butterfly throttle valve t'jcontr'tilsfthe outlet 's of the' mixing hamhergs'aid outlet connecting di=' The throttle val e! usual man a-.1 a

An open cylinder u on its lower end with a concave 1 ring medepted to sea oni the coned heud for -..the 'annul ar o o ling surrounding the;

1 'tliameter he nnxingjchember q is slightlyjlnrger than the s to Iforiri; a closure er'oundthe cone-m Tlhe i located n rectly with; the :fintii kemnnifoldwot shown) lever is Iindicatedby .t, and this lever i controlled directly from the-steering ;wheel of the inachine inthe is slidalily mounted .in the mixing chamber-g endiepriovidetl chnod viilve rho latter; Said cylin r it is providedon its upper en a with gnvergin H spiderar h i ivy which terminateUi'n a tu nla'r-"niembonrm;

threaded [both internally and enterniilly Said tuliillar iinember h ts esliding fit 1m a bore extending through the upper wallof andthe sp'rav nozzle needle stem 1 is udjustably thread insaid member w,='t-he 7 seat in the valve opening The valve needle'stem 3 is locked in ad usted posit-ion needle is being adapted to the mixing chamber. venting Jumping of the eyln'ider 'u, when by a lock nut a. It will thus be seen that the cylinder u is capable of a longitudinal movement in the mixing chamber, and such movement controls theair su iiply entering As a means for prethe throttle valve is opened suddenly or when the machine running over roug or uneven ground, a motion retarding device is used. The latter consists of a daslupot 2 emitaining a slow-flowing liquid. )iv -}1lunger 3. operating in said (hish-pot, mo unted on the end of in arm 4 which supported by the tubular member :10, being, locked in position. by lock-nuts 5.

The general operatioiuo't, my invention as follows: Tll'ie'valve ring '11 is norn'ially spaced a slie ht d1. tance above the coned lread m, so that .lhe air suppls Will never be en tire-lv cut off. it will beseen that after the initial adjustments have been made, the valve needle and the. eylini'ler u will he rigidly connected so as to move in synchronisin. and the valve needle 7 is soformed that when these parts are elevated the ratio of the air and gasolene valve openings will be definitely fixed in. act-ordainze with a pre determined law. As the throttle valve 1" is operated, the varying suction created through the'intake manifold, will cause the cylinder u to move np vard or dow-mvard, as the throttle valve is opened or closed. This movement will he even and uniform, being governed by the retarding plunger 3. As the cylinder moves. the \-'ohnne,of air drawn into the mixing chamber 9 will have a definite ratio to the volume 'of hydro-- carbon vapors suokedin through the spray nozzle valve. In. this Way, for any speed of the engine, the mixture will have the proper o l I proportions which Wlll render the engine most eflicient for that speed.

I claim:

1. In a carbureter, the COIIlblIHItlOIl of a mixing chamber. a gravity-valve controlling the air inlet of the latter, the valve having a hollow stem extending through the top of the n'iixing chamber, a lateral arm, a daslrpot element connected to the outer end of said arm, and. a needle-valve controlling the fuel oil inlet of the mixing chamber, said needle-valve having a stem threaded in said hollow stem. of the first mentioned valve,

2. In a carburetor. the combination of a mixingv chan'iber, a gravity valve controlling the air inlet of the latter, the valve having a hollow stem extemling through the top of the mixing chamber, a lateral'arm adjust.-

ahly supported by the projectingei'id of the valve stem, a dash-pot element connected to the outer end of said arm, and a needlevalve controlling the fuel oil inlet of the mixing chamber, said needle-valve having a stem threaded in first mentioned valve.

3. In a carbureter, the combination of a mixing chamber, a gravity valve controlling the air inlet of the latter, the valvehaving a. hollow stem extending through the top of the mixing chamber, a collar-element threaded on the projecting end of said valvestem and a lateral arm supported by said eollar ele-ment, a dash-pot element connected to the outer end of sand arm, and a'needlevalve controlling the fueloil inlet of the mixing chamber, said needle valve having a stem threaded in said hollow stem of the first mentioned valve.

SAMUEL WILSON WEAVER.

said hollow stem of the 

